2 parallel sides or 2 pairs of parallel sides?
It is a parallelogram.
Trapezium (rectangular Shaped E.G.)
A trapezoid is a shape that has 4 sides and 2 parallel sides. The sides that are parallel are called the bases.
The four sided shape that has two parallel lines is called a trapezoid. A parallelogram is a four sided shape that has two pairs of parallel lines.
it can but doesn't have to.